Analysis of the Abnormal Water Level of Piezometric Tube UP14 at Qiaoqi Dam's Foundation Gallery

摘要

This article gives descriptions on data of piezometric tube UP14 at Qiaoqi dam's foundation gallery and the grouting process of the cut-off wall,analyzes the exact location of dam's defects in the cut-off wall and the effectiveness of grouting work,it also gives a brief description on the methods of searching for the location of cut-off wall's defects.